Yema's First Manufacture Moonphase Is a Slim Dress Watch Done Right

Yema has always been a tool watch brand. Divers, pilot chronographs, purpose-built instruments for people who actually needed them. That identity goes back to 1948, when Henry-Louis Belmont founded the company in Morteau, in the French Jura. So when Yema says it's entering the dress watch space with a moonphase, that's genuinely worth paying attention to.

The watch is called the Senans Grand Lune, reference CMM.22, and it marks two firsts for the brand: Yema's first manufacture moonphase complication, and the launch of an entirely new dress watch collection. Neither of those is a small thing for a label whose DNA lives in the 1963 Superman diver.

The case measures 38.5mm, which is exactly right for this kind of watch. It's slim, it's meant to slide under a cuff, and the micro-rotor movement helps keep the profile honest. This isn't a tool watch pretending to be elegant. Yema built it from scratch to sit in a different drawer entirely.

What's Actually New Here

The CMM.22 calibre is the headline. It's an in-house movement with a micro-rotor, which keeps bulk out of the case and signals that Yema's manufacture credentials are growing up fast. The moonphase display features a sculpted moon disc with applied luminous material, so the moon itself catches light in a way flat-printed versions simply don't. That's a detail you notice on the wrist.

The Senans collection itself takes its name from the Royal Saltworks of Arc-et-Senans, a UNESCO World Heritage site in Franche-Comté. The regional connection is deliberate. Morteau, where Yema is based, sits in the same part of France. This watch is rooted in a place.

The Case and Dial

At 38.5mm the case is classic dress watch sizing, slim enough for formal wear and proportioned for smaller wrists too. The dial layout puts the moonphase at 6 o'clock, clean and uncluttered above it. Yema hasn't crammed in complications to justify the price. The restraint shows confidence.

• Case diameter: 38.5mm
• Movement: In-house CMM.22 with micro-rotor
• Complication: Manufacture moonphase with sculpted luminous moon
• Brand origin: Morteau, France, founded 1948
• Collection name: Senans, referencing Arc-et-Senans, Franche-Comté

Who Is This For

If you've followed Yema through its Ambre France era since 2009, you've watched a brand methodically rebuild its manufacturing capability and credibility. The Superman and Flygraf kept the tool watch faithful happy. The Senans Grand Lune is the pivot toward buyers who want something for dinner, not a dive site.

It suits someone who finds Swiss dress watches at this complication level either too conservative or too expensive. Yema has historically offered real value against Swiss competitors, and the brand's independence gives it a character that generic Swiss dress watches often lack.

It also works as a collector's piece. First manufacture moonphase from a brand with a 75-plus-year history, regional French identity baked in, a sculpted moon detail that photographs beautifully. There's a story here, and collectors care about stories.

How It Stacks Up

Comparing the CMM.22 to Swiss moonphase dress watches at similar price points, Yema's French manufacture angle is a genuine differentiator. You're not buying a re-cased Swiss ébauche with a moon complication bolted on. The movement is theirs. For buyers who care about that distinction, it matters quite a bit.

Yema has earned the right to ask dress watch buyers to take it seriously. The Senans Grand Lune CMM.22 is a confident, well-considered debut in a category the brand has never attempted before, and the sculpted luminous moon alone gives it something to talk about at the table.